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Dark energy from brane-world gravity

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

Recent observations provide strong evidence that the universe is accelerating. This confronts theory with a severe challenge. Explanations of the acceleration within the framework of general relativity are plagued by difficulties. General relativistic models require a "dark energy" field with effectively negative pressure. An alternative to dark energy is that gravity itself may behave differently from general relativity on the largest scales, in such a way as to produce acceleration. The alternative approach of modified gravity also faces severe difficulties, but does provide a new angle on the problem. This review considers an example of modified gravity, provided by brane-world models that self-accelerate at late times.

Original languageEnglish
Title of host publicationThe Invisible Universe
Subtitle of host publicationDark Matter and Dark Energy
EditorsLefteris Papantonopoulos
Number of pages10
Publication statusPublished - 2007

Publication series

NameLecture Notes in Physics
ISSN (Print)0075-8450

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